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Thunderstorms that form at night, without a spark from the sun's heat, are a mysterious phenomenon. From June 1 through July 15, 2015, researchers from across North America will fan out each evening across the Great Plains, where storms are more common at night than during the day. The effort, co-organized by numerous collaborating institutions, will use lab-equipped aircraft, ground-based instruments, and weather balloons to better understand the atmospheric conditions that lead to storm formation and evolution after sunset.
Image credit: NOAA
